baber/WOPTO huggingface dataset:
Patent GB-271157-A (GB)
Title: Improvements in means for driving kinematograph films
IPC: G03B1/22
Filed: 1926-02-19
Abstract: 271,157. Newman, A. S. Feb. 19, 1926. Kinematograph apparatus. - In a claw feed mechanism, the claw lever is pivotally mounted on a lever which is rocked by means of a crank pin engaging a slot therein, and means for producing friction between contiguous faces are provided to produce the appropriate movements of the claw; means for rendering the feed mechanism ineffective when still projection is desired may be provided. As shown in Figs. 1 and 4. the claw lever l is provided with an enlargement k having projections n, one of which forms a sleeve surrounding a pivot j carried by an enlargement h on a lever g pivoted at c. A slot i is formed in the leverr g and is engaged by the pin f of a crank by which the lever is rocked. A spring o retains the parts in position on their pivots and presses the enlargements h, k together so that the levers move together as a unit when the lever l is free from restraint. The lever l carries a claw m and a projection m<1>; the claw fits the perforations in the film so that the film restrains the lever l during the feed stroke, and the projection engages a guide q to restrain the lever l during the return stroke. A lever r may be provided, one end of which is pressed against the edge of the film by a spring s and the other end engages a plate t pivoted on a rod u and urged by a spring v against the lever r. The film is notched at suitable points for the prolonged projection of single images, and when the lever r enters a slot, the spring v. turns the plate t so that a guide w, Fig. 3, carried by it engages the projection m<1> and prevents the claw m from entering the film. A plate x on the guide w prevents the guide from becoming operative while the claw is in a film perforation. Specification 7524/14 is referred to.
Patent GB-842607-A (GB)
IPC: H01C10/20
Filed: 1956-02-16
Abstract: 842,607. Variable resistors. PLESSEY CO. Ltd. Feb. 11, 1957 [Feb. 16, 1956], No. 4826/56. Class 37. In a variable resistor the electrically operative elements are formed as a sub-assembly ready for the insertion of the actuating spindle. A body 1 of insulating material has a resistance track 2 and a contact ring 3 set in one face and is pierced by a central hole into which a bush 7 is fitted which carries the contact carrier 4. The contacts 5 and 6 which engage the tracks 2 and 3 are carried by the contact carrier 4 which also provides the pressure to maintain the bush 7 in position against the restraint of the retaining member 12 bearing on the washer 14. The contact carrier 4 has lugs 10 which fit into recesses 11 on the flange 9 which is integral with the bush 7. A lug 15 on the flange 9 may be used to operate an on-off switch and a lug 16 may be used as a limit stop. The bore 17 of the bush 7 is provided with serrations 18 to engage a splined shaft 24, which is retained in the housing base 27 by spring rings 28. Two sub-assemblies may be mounted on a common shaft or on separate coaxial shafts Figs. 4 and 5 (not shown). A combined plastic shaft and knob may be used with one sub-assembly to produce a pre-set variable resistor, Fig. 6 (not shown).
Patent GB-941011-A (GB)
Title: Process for purifying solutions containing sugar
IPC: C13B20/14
Filed: 1960-02-11
Abstract: The sugar solution is contacted with an acid activated spongy cation exchange resin i.e. a non-proliferous synthetic water-insoluble resin, the matrix of which is formed of a cross linked copolymer of heterogeneous structure obtained from vinyl aromatic monomers.  The resin may contain carboxylic or sulphonic acid ion exchanging groups and after exhaustion may be regenerated by a solution of an alkaline earth metal salt or hydroxide and thereafter with an aqueous solution of a mineral acid.  The solution may also be contacted with a spongy or homogeneous anion exchange resin having basic nitrogen-containing groups such as neutralized quaternary ammonium groups.  Either resin may be used first, or both may be used simultaneously. Suitable spongy cation exchangers may be produced, as described in Specification 894,391, by sulphonating a copolymer of styrene and divinyl benzene, the copolymerization being effected in aqueous suspension in the presence of white spirit or normal heptane. A carboxylic cation exchanger may be produced by saponifying a spongy copolymer of methyl acrylate and divinyl benzene in the presence of normal octane.  The preparation of suitable anion exchange resins is also described.  Specifications 654,706, 679,850, 679,851, 679,852, 700,470, 779,994, 867,449, 885,719, 885,720, 900,037 and U.S.A. Specifications 2,591,573, 2,629,710 and 2,642,417 also are referred to.
Patent GB-216195-A (GB)
Title: Improvements in or relating to pneumatically operated musical instruments
Filed: 1923-02-20
Abstract: 216,195. Evans, W., and Chappell Piano Co., Ltd. Feb. 20, 1923. Blowing and exhausting air; winding-mechanism; treadle devices.-The tune-sheet is driven by a mechanical motor the winding spindle of which is connected through one-way driving- means to a moving part of the operating-mechanism of a piston or rotary fan pump supplying the wind or suction. In the Figure, a piston pump comprising two cylinders 10, 12 is operated by treadles 18 connected to pistons 22 by bands 19 passing over free-wheel clutches 20. The pistons are hollow and contain valves 25 opening on descent of the pistons. The cylinders 10, 12 are connected through valves 27 to a regulator cylinder 11 which contains a spring-controlled plunger 29 and leads to the action. The shaft 21, rotated always in one direction, is connected through a friction clutch 32 to the winding spindle 34 of a spring motor 38 which drives the tunesheet. A spring 35 may be arranged to permit axial, but not angular, movement of the clutchmember 33, or a closely-coiled spring alone may connect the member 33 to the shaft 34. The treadles are mounted on a frame 16, 17 pivoted at 15 to be swung up when out of use, and secured in the upper position by latches 39 which carry the feet 40.
Patent GB-623826-A (GB)
Title: A process for the manufacture of pentaenes
Filed: 1947-02-20
Abstract: Pentaenes of the formula <FORM:0623826/IV (b)/1> wherein R=an alkyl, aryl or aralkyl radical are obtained by condensing 4-(21,61,61-trimethyl cyclohexene-(11)-yl)-2-methyl-butene-(2)-al-(1) with a Grignard compound of an ether of 1-hydroxy-3-methyl-pentene-(2)-yne-(4), heating the resulting ether of 1-hydroxy-3,7-dimethyl - 6 - hydroxy - 9 - trimethyl - cyclohexenyl - monadiene-(2,7)-yne-(4) with a small proportion of iodine preferably in the presence of an inert solvent, and then subjecting the ether of 1 - hydroxy - 3 : 7 - dimethyl - 9 - trimethyl - cyclohexenyl - nonatriene - (2,6,8) - yne - 4 formed to hydrogenation in the presence of a hydrogenation catalyst, e.g. palladised charcoal, until 1 mol. of hydrogen has been added to the triple bond of said ether.  As the starting material there may be used the methyl ether.  Detailed examples are given.
Patent GB-128684-A (GB)
Title: Improvements relating to the Manufacture of Tyres.
IPC: B29D30/00
Filed: 1918-03-22
Abstract: 128,684. Dunlop Rubber Co., Macbeth, C., and Sullivan, E. March 22, 1918. Lifting-dogs and the like.- Relates to apparatus for placing tyres in moulds and comprises a turret crane and means for supplying tyres and moulds in close proximity to the crane so that the tyres can be successively attached to the crane and placed by the crane in the moulds. The invention is particularly described as applied to solid rubber tyres. The turret crane is provided with three arms A', A<2>, A<3>, having suspended grabs E, each comprising gripping arms E<4> controlled by a hand wheel E' through a rod E<6> and limbs E<5>, adapted successively to lift the top member of a pile of cores B, transfer it to a pile of tyres C where the core is inserted into the tyre, and, if necessary, secured by a wedge, and to lift the core with the tyre thereon and transfer it to a mould D on a platform F.
Patent GB-1332613-A (GB)
Title: Hydrogenation process
IPC: C07B31/00
Filed: 1972-02-03
Abstract: 1332613 Hydrogenation process INSTITUT FRANCAIS DU PETROLE DES CARBURANTS ET LUBRIFIANTS 3 Feb 1972 [9 Feb 1971] 5133/72 Addition to 1233129 Heading C2C  Unsaturated compounds containing both a carbon-carbon unsaturation and at least one distinct functional group are hydrogenated using a catalyst obtained by contacting a transition metal compound with an aluminium compound of the formula where m is 1, 2 or 3, Me is a monovalent or a divalent metal of Group Ia or IIa of the Periodic Chart referred to hereinbefore, p is the valency of the metal Me, and the X radicals are each R, OR, NR 2 , NHR or SR groups where R is a substituted or unsubstituted monovalent hydrocarbon radical optionally containing one or more heteroatoms with the proviso that two X radicals may be joined to form an -A-Z-B- or -O-A-Z-B-O- group where A and B are alkylene groups and Z is an alkylene group, an oxygen or sulphur atom, a NH or N-hydrocarbyl group or a polyvalent metal (see main patent). Examples convert sulpholene to sulpholane, butylvinyl ether to butylethyl ether, methyl and ethyl acrylates to the propionates, maleic anhydride to succinic anhydride, mesity oxide to methylisobutyl ketone and ethyl linoleate to ethyl stearate.
Patent GB-879642-A (GB)
Title: Process for dyeing nitrogenous fibers
IPC: D06P1/62
Filed: 1960-02-12
Abstract: 879,642. Dyeing nitrogenous fibres. CIBA Ltd. Feb. 12, 1960 [Feb. 19, 1959; July 19, 1959], No. 5188/60. Class 15(2). Nitrogenous fibres such as wool, silk or polyamide fibres are dyed with dyestuffs containing at least two water-solubilizing groups, e.g. sulphonic or carboxylic groups, in the presence of a compound containing at least one basic nitrogen atom to which is attached at least one residue containing a polyglycol ether chain, the molecule of the compound containing at least 3 groups and at least 4 carbon atoms not forming part of such a group, and also in the presence of an anionic surface-active substance that has no dyestuff character but possesses affinity for the nitrogenous fibres. Suitable dyestuffs are reactive dyestuffs of all classes, sulphonated copper phthalocyanines, 1 : 2-chromium (or cobalt) complexes of azo dyestuffs, azo dyestuffs and anthraquinone dyestuffs. Suitable compounds containing a basic nitrogen atom are the reaction products of at least 3 molecular proportions of an α : #-alkylene oxide with 1 molecular proportion of an organic compound containing at least one basic primary or secondary amino group or one basic tertiary amino group and in addition an alcoholic hydroxyl group or a salt or quaternary ammonium salt derived therefrom, and numerous examples are specified. Suitable anionic surface-active substances are alkali metal sulphonates of alkylbenzenes or alkylnaphthalenes, alkali metal monosulphates of 2- alkylbenzimidazoles, sulphonated oxybenzeneformaldehyde condensation products, naphthalene sulphonic acid-formaldehyde reaction products and the reaction products of a phenol or thiophenol with an alkali metal sulphide, sulphite or sulphite-formaldehyde. The dyebath is rendered weakly acidic by addition of formic, acetic or sulphuric acid or ammonium sulphate, phosphate or acetate, and may also contain sodium sulphate. Dyeing is effected at an elevated temperature up to the boil, and, if desired, the fibres may be pretreated in the bath containing all the constituents except the dyestuff, which is subsequently added. Numerous examples are given.
Patent GB-372842-A (GB)
Title: Improvements in and relating to apparatus for dividing in the same ratio the direct and alternating components of an electric current
IPC: G01R19/10
Filed: 1931-02-19
Abstract: 372,842. Current transformers. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London, and GARTON, C. G., 56, Park Road, Rugby. Feb. 19, 1931, No. 5285. [Class 38 (ii).] Apparatus for dividing in the same ratio the alternating and continuous current components in circuits carrying these components simultaneously comprises a non- inductive shunt 3 which supplies the current coil 4 of a wattmeter with a fraction of the continuous current component, and a current transformer 1, 2 supplying the same fraction of the alternating current component. The core of the transformer may be provided with a small air gap to weaken its continuous current magnetization which is neutralized by the shunted current.
Patent GB-292052-A (GB)
Title: Improvements in shaft furnaces, gas producers and the like
IPC: C10J3/80
Filed: 1927-03-01
Abstract: 292,052. Stettiner Chamotte-Fabrik Akt.-Ges. vorm. Didier, and Terres, E. March 1, 1927. Divided on 284,639, [Class 51 (i), Furnaces and kilns, Combustion apparatus of]. Shaft furnaces; discharging. - In a waterjacketed furnace or gas producer, the steam. generated in the jacket i is passed through a superheater g, which is heated by the furnace gases after they have passed through a dust separator v. The steam may be used for operating a grating having a knife-like extension d for discharging ash and clinker into the tip-bucket e. The dust separator has a depending baffle a and both the superheater and the separator have dust-discharging openings z. The furnace has an enlarged head b around the charging shoot g, and the water jacket is formed with a corrugated wall k and an enlarged dome portion n.
Patent GB-1037242-A (GB)
Title: Improvements in or relating to lampholders
Inventor: WARD LEONARD ERIC
IPC: F21V8/00
Filed: 1964-02-10
Abstract: 1,037,242. Illuminating instrument panels. WARD, BROOKE & CO. Ltd. Feb. 10, 1965 [Feb. 10, 1964], No. 5473/64. Heading F4R. [Also in Division H2] A bulb 3 is mounted within a transparent panel 1 by means of a conductive cage 6, which may be covered by a transparent insulating sleeve 12 which may be coloured. The panel may carry instrument dials and liquids which are illuminated by the bulb, and printed circuits 2, by which electrical connections are made with the bulb.
Patent GB-644412-A (GB)
Title: Improvements relating to the magnetic induction acceleration of electrons
IPC: H05H11/00
Filed: 1948-02-24
Abstract: 644,412. Magnetic induction accelerators. BRITISH THOMSON-HOUSTON CO., Ltd., MILNER, C. J., and WILKINSON, K. J. R. Feb. 24, 1948, No. 5483. Addition to 624,850. [Class 39 (i)] In the magnetic induction accelerator of the parent Specification in which the accelerating flux and the guiding flux are produced by two concentric windings which lie radially on either side of the electron orbit, the two windings are connected in parallel with a source of alternating voltage, and an adjustable auxiliary voltage of small value relative to, and in quadrature with the alternating voltage is applied in series with one of the windings, preferably the one having the greater number of turns to effect a correction of the small phase difference between the accelerating flux and the guiding flux due to the resistances of the windings.
Patent GB-253971-A (GB)
Title: Improvements in and relating to furnace grates
IPC: F23H11/04
Filed: 1925-02-28
Abstract: 253,971. Bennis, A. W. Feb. 28, 1925. Grates.-In a travelling grate of the kind in which the bars are threaded on transverse carrier bars pivotally connected together, the carrier bars are provided with forwardly and rearwardly projecting plates, trays or the like adapted to overlap or underlap corresponding plates &c. of an adjacent carrier bar for the interception of ashes &c. falling between the grate bars. As shown in Fig. 1, the grate bars 3 are threaded on carrier bars 2 integral with, or, as shown, attached by bolts to, plates 1 with overlapping and underlapping portions 7, 8. The plates 1 may extend continuously across the grate or may be arranged in sections between two or more driving-chains. Fig. 2 shows a carrier bar 10 with flanges 12, 15 for intercepting ashes. It is made in sections with parts 18 keying into recesses 19, Fig. 5, in the links 20 of an intermediate driving-chain. The gap 21 between the carrier bar sections is closed by a shrouding bar, Figs. 3 and 4, wide enough to overlap the gap, its lugs 22a, of lesser width, being normally kept out of register with the gap by a spacing-plate 24 slipped into the gap 23 alongside the lugs. In the modification shown in Fig. 6, the bars 25 are supported on heads or racks 26 riveted or bolted to the main body of the carrier bars 27 having forwardly and rearwardly extending flanges 29, 30 forming a conveyer for ashes. The carrier bars may be bolted at their ends to chain links at the side of the grate. Fig. 9 shows auxiliary carrier bars 33 bolted at 34 to carrier bars or trays 35 with flanges 36 to retain the ashes. Passages for air are provided between the trays and carrier bars. The carrier bars 40 shown in Fig. 11 are provided with flanges 42, 43 having a rib 44 secured to the trough-shaped member 46 acting as an ash-conveying element. The driving chains are flexibly connected by swivelling bolts to lateral grate bars and to the carrier bars. Specification 237,027 is referred to.
Patent GB-581824-A (GB)
Title: Improvements in or relating to snap action electrical switches
IPC: H01H15/18
Filed: 1945-02-02
Abstract: 581,824. Snap-action switches. CHADWICK, R., and SMART & BROWN (ENGINEERS), Ltd. Feb. 2, 1945, No. 5703/44. [Class 38 (v)] [Also in Group XXXVI] A snap-action switch is operated by the rectilinear movement of a finger piece 10 which extends through a slot 11 in the switch casing and is rigidly connected to the movable contact member 1. The member 1 is acted upon by dead-centre snap mechanism such as is provided by the two links 6 co-operating with flat springs 9. In modifications coiled springs are used, or a spring on one side only of the contact members.
Patent GB-649141-A (GB)
Title: Improvements relating to gain control circuits for television receiving apparatus
IPC: H04N5/53
Filed: 1948-02-26
Abstract: 649,141. Automatic gain controls. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Feb. 26, 1948, No. 5719. Convention date, Feb. 26, 1947. [Class 40 (v)] An A.G.C. circuit for a television receiver comprises a valve which is " gated " so as to be conductive only during the blanking period, and is characterized by responding rapidly to a decrease in signal strength but more slowly to an increase, being thereby rendered insensitive to impulsive noise. The demodulated signal is applied to an outer grid of valve 26 in such a sense that the video component is positive in nature. The valve 26 is biassed so as to be non-conductive save when positive-going impulses, which are derived from the line deflection generator 20, are applied to the inner grid; the impulses are delayed, and occur immediately after the synchronizing impulses. The current in the valve is determined by the black level in the signal; alternatively the impulses may be made simultaneous with the synchronizing impulses, the valve then responding to the peak synchronizing signal. The potential across the anode load 48 comprises negative-going pulses whose amplitude is inversely proportional to the signal strength and which are rectified by a diode 60 in conjunction with load circuit 68, 74, this arrangement forming a quick-charge slow-discharge circuit. The A.G.C. potential is obtained from the smoothed voltage across the condenser 74 by means of a reversing valve 78, which is direct-coupled to a cathode follower 86, the A.G.C. line being returned to the cathode resistance 90. The circuit is damped by means of a condenser 96 and resistance 100 connected from the cathode of valve 86 to the grid of valve 78.
Patent GB-821806-A (GB)
Title: Improvements in valved couplings for vacuum conduits
IPC: F16L37/38
Filed: 1958-02-21
Abstract: 821,806. Pipe joints. MANUS A. B. Feb. 21, 1958 [March 14, 1957] No. 5725/58. Class 99(1). In a coupling for connecting a branch pipe to a vacuum conduit 1 which includes a vacuum valve casing comprising two separable members one of which is permanently connected to the conduit and supports the valve body, while the other member is permanently connected to the branch conduit and acts as a control member for the valve, the casing member connected to the conduit consists of a tubular member 3 closed at the outer end thereof and formed with an external annular groove 4 of angular profile for the reception of an annular valve body 7 of elastic material, one side surface of the groove forming a seat for the valve body around at least one opening 5 communicating with the bore 6 of the member, and the other side surface of the groove being adapted to receive the valve body in the inactive position thereof. The valve casing member connected to the branch pipe comprises a sleeve 12 which is brought into telescopic engagement with the member 3 and is adapted to move the valve body from the active to the inactive position thereof and thereby causing the valve body to lock together the sleeve 12 and member 3. As shown, the coupling is used for connecting. an electrically driven pulsator 10 to the vacuum conduit of a stationary automatic milking plant and to an electric motor circuit. The valve body 7 is wedge-shaped in cross-section and the sleeve 12 is provided with an internal annular ridge 13, also wedge-shaped in cross-section for operating the valve body. A longitudinal slot or slots 8 are formed in the peripheral surface of the member 3 to provide communication between the opening 5 and the interior of the pulsator.
Patent GB-454219-A (GB)
Title: Improvements in or relating to fabric draw-off mechanism for knitting machines
IPC: D04B15/88
Filed: 1935-02-22
Abstract: 454,219. Knitting. WILDT & CO., Ltd., and LEEDHAM, L. H., Adelaide Works, Leicester. Feb. 22, 1935, No. 5780. [Class 74 (ii)] An instantaneously acting check device acts on the spindle of one of a pair of take-up rollers to arrest reverse movement during the periodic resetting of a loading device which is operatively connected to a roller spindle through a one-way drive, the loading device being of the type which is capable of storing energy when actuated by a setting device and afterwards imparting it, as a unidirectional torque, to one of the rollers. The take-up roller 14 is rotated in one direction through a one-way roller clutch 19, 20, 22, by the pull of a spring 26, or a weight, acting at the end of a rod 23, which is slidably adjustable in the outer member 19 of the clutch, so as to vary its effective radius. When the spring has turned the roller 14 through a predetermined angle, a follower 30 mounted on the outer clutch member 19 engages a fixed cam or cams 31 as the ring 11, on which the take-up mechanism is mounted, revolves, and rotates the member 19 in the reverse direction against the pull of the spring, thus resetting the clutch. A similar and oppositely acting clutch 33, 34, 35 at the other end of the roller 14 acts instantaneously to ensure that this roller shall not be rotated in the reverse direction by the pull of the fabric during the resetting. The associated draw-off roller 15 is urged against the roller 14 by springs 37 (not shown), whose pressure is adjustable by screws 38. Cams 41 borne on the spindle of the roller 15 and bearing against the roller 14, can be rotated by handles 42 to separate the rollers for the insertion of the fabric between them. The fabric passes' off roller 15 and between it and the roller 16 on to which it is wound. The ends of the spindle 44 of the roller 16 are carried in slotted tubular supports 45, 46 and the roller 16 is urged against the roller 15 by springs 47 whose pressure may be adjustable and which are of such resilience that, as the diameter and weight of the fabric roll increase, the pressure between the rollers remains constant; this pressure serves to transmit the drive to roller 16. Conveniently situated withdrawal gates 49, through which the ends of the spindle 44 may be withdrawn, are provided in the supports 45, 46 and are normally closed by covers 50. Adjustable stops 55, 56 co-operate with abutments on the outer clutch member 19 to limit rotation in either direction ; the stop 55 prevents over-resetting due to the momentum of the clutch member 19. The rollers (e.g. rollers 14 and 15) may be covered with resilient rubber. Specification 376,837 is referred to.